'Watcher' in the Bible

‘And behold, I saw in the visions of my mind as I lay on my bed, an angelic watcher, a holy one, descended from heaven.

In that the king saw an angelic watcher, a holy one, descending from heaven and saying, “Cut the tree down and destroy it; but leave the stump with its roots in the earth, but with a band of iron and bronze around it in the new grass of the field, and let him be wet with the dew of heaven, and let him feed with the beasts of the field until seven periods of time pass over him,”